Drafting device or utility



Feb. 5, 1934. R B. WARE 1,945,937

DRAFTING DEVICE 0R UTILITY Filed June lO, 1932 INVENTOR,

/ l /adzzajy Wre.

ATTORNEY.

Patented Feb. 6, 1934 f' l v UNITED STATES PATENT OFFICE DRAFTING DEVICE OR UTILITY Rodney B. Ware, Scituate, Mass.

Application June 10, 1932. Serial No. 616,394

4 claims. (C1. :i3-'15) Y This invention relates to improvements in section; the graduations being located along the. drafting devices, or utilities, and more particularapex edge and on both sides, as shown in ly, it relates to an attachment designed to be used Fig. 3. on right angle triangles, rulers, squares, and other It is to be understood that the graduations are well known accessories used by a mechanical on opposite sides, or surfaces of the member 4, 80

` draftsman. as indicated at 11, in Fig. 2, and 12 in Fig. 3.

An object of the invention is to provide a scale From Fig. 2, it will be noticed that the pivoted member that is pivotally or hingedly connected and graduated edge 4 lies close to a sheet of to an edge, or edges, of a triangle, a ruler, or paper 13. This is also shown in Fig. 3. In Fig.

other drafting articles, so that it may readily as- 4, is illustrated a square, the limbs 14 and 15 65 Sum@ a IJOSiOIl 01 1i@ flat dOWn OIl the drafting of which are arranged at 60 to each other, and

board, or paper. A further object is to provide the pivoted edges 4 and 5 are connected to these a hinge scale member that is graduated on both edges.

of its sides, said hinge scale being preferably tri- 16 shows an opening in the limb 4, on one edge angular in cross section, so that its thin edge, or of which is pivotally connected the member 17. 70

apex, Will permit the user to use the scale close This may be graduated, or not, as desired. It

down on the paper. may also serve as a handle for lifting the square A further object is to employ the graduated from the drafting board.

hinge scale, so that it may serve as a handle for In Fig. 5, is shown a right angle triangle, 18,

2@ picking 11p the triangle, or other article, if it having the curved cut-out portion 19 and rotat- 75 is desired to lift it or remove it from the drafting amy mounted n this Opening, is the member 20 bOald, 01 11S@ the ODDOSS Side of the graduated having the graduations 21. This member 20 is Scale 0f the hinge member. provided with an arm 22 to which is pivotally Referring to the drawing: connected the graduated member 4, in the same Fig. 1 shows the hinge scale member attached manner as described in Figs. 1 and 2. The mem- 80 to the two inner edges of a square, with the corber 20 serves as a protractor for laying olf any ners of the scale chamfered, or cut off. convenient number of degrees. The triangular Fig. 2 is an enlarged detail sectional view on graduated member 4 or 5 may be used alone the line 2-2 0f Fig. 1, illustrating the hinge scale, when removed from the drafting utensil,

the full lines showing the edge of the scale in It will be seen, from this description, that I 85 contact with the paper. have provided for drafting utilities of various Fie'. 3 illustrates a Straight ruler having the kinds, each having the edge portion withapivoted hinged scale connected to the opposite edges of member attached thereto, the graduations being the same and with one of the scales shown flat, or on the pivoted member.

a in @105e Contact with the Papel' and the other An important feature of my present invention 90 raised to serve as a handle. is that it serves to combine two instruments in Fig. 4 ShOWS the hinge scale attached to a one, a drafting instrument and scale, that is to square, the inner edges of which are arranged at say; a triangle and scale member for instance, o to each other, and one limb of a Square havor, a. ruler and scale member, or, a square and 40 ing an opening, in which is located a pivoted scale member as setforth above. 95

member, and By combining the pivoted member and an Fig. 5 illustrates a right angle triangle with instrument, as a triangle and scale, the graduthe protractor part having the hinge scale conated edge 10 of the pivoted member may be used nected to the protractor. as a straight edge, for the purpose of drawing Referring to the drawing in detail: lines. l and 2 designate the two limbs of a square, An important feature is that the swinging their inner edges being connected with a curved scales, 4 or 5, makes it possible to use the utiliportion 3. 4 and 5 designate the hinged and ties, or drafting implement, either side up, and graduated scale members that are attached to still have the thin edge of the scale, or scales,

p the inner edges of the limbs l and 2, by means down close to the paper.

` of the pivot pins 6 and 7, which pass through The protractor construction, shown in Fig. 5,

the projections 8 on the limbs and the projecpermits the protractor to be turned over for tions 9 on the graduated and hinged edges. drawing the opposite angle, Without re-setting, Referring to Figs. 2 and 3, it will be seen that and, at the same time, have the thin edge close the hinged edges 4 and 5, are triangular in cross to the paper. This is a desirable feature, even- 110 if the straight-edge of the protractor is not graduated.

What I claim is:

1. A drafting utensil formed with a plurality of projections and each one of which is formed with an opening extending therethrough, a graduated scale member formed with projections registering between the projections of the utensil member, a pivot pin passing through all of said projections, the said member being substantially triangular in cross section.

2. A drafting utensil formed with a plurality of projections on one of its edges, said projections forming recesses between them, and each one of which is formed with an opening extending therethrough, a graduated scale member formed With projections and entering the recesses between the projections of the utensil member, a pivot pin passing through said proj ections, the said member being substantially triangular in cross section and having graduations on two adjacent surfaces.

3. A drafting instrument, having a part pivotally attached to an edge thereof for movement into planes that co-incide with the opposite surfaces of the instrument, said part having graduations. on its adjacent surfaces, the part being triangular in cross section and the graduations being located at or near the edge thereof `farthest removed from the edge of said drafting instrument.

4. In a drafting utensil of the square type, members triangular-shaped in cross section pivotally connected to the adjacent inner edges of the square, said members having graduations on adjacent faces.

RODNEY B. WARE. 

